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SAP's playbook for SAP HCM on-premises customers is transparent and aggressive: create end-of-life pressure, price SuccessFactors subscriptions attractively at signing, then escalate fees once you're locked in. SAP has stated that its intention is to migrate all on-premises HCM customers to SuccessFactors cloud. The vehicle for this migration is the 2027 end-of-mainstream-maintenance date for SAP ECC — including the HCM module.
But SuccessFactors migration is not the only option. For many organisations — particularly those with highly customised SAP HCM environments, complex payroll configurations, or workforce structures that SuccessFactors doesn't support well — the migration business case simply doesn't hold up. This article examines the real cost of SuccessFactors migration, explains why so many organisations have deferred or abandoned the project, and outlines the alternatives that provide a credible long-term path forward.
The SuccessFactors Migration Reality Check
SAP's sales materials present SuccessFactors migration as a straightforward modernisation journey. The reality experienced by organisations that have attempted it is substantially different:
The Customisation Problem
SAP HCM on-premises environments accumulate customisations over decades — custom infotypes, custom payroll schemas, user exit modifications, and deeply embedded integrations with payroll, time management, and organisational management systems. SuccessFactors is a SaaS platform built on configuration, not customisation. Every piece of custom SAP HCM code must be replaced with standard SuccessFactors configuration, a third-party middleware, or a custom API integration. For organisations with complex HCM landscapes — global payroll with country-specific legal requirements, complex collective bargaining agreement rules, or legacy organisational structures — this re-engineering is extremely expensive and time-consuming.
Payroll Is the Hidden Problem
SAP Payroll is the component most frequently cited by organisations abandoning SuccessFactors migrations. SuccessFactors Employee Central Payroll (ECP) is SAP Payroll running in SAP's cloud infrastructure — not a native cloud payroll engine. It addresses the scalability issue but not the feature parity gap for complex multi-country payroll with deep statutory reporting requirements. Many organisations that migrated to SuccessFactors Employee Central (HR core) have retained their on-premises SAP Payroll — creating a hybrid architecture that is expensive to maintain and architecturally fragile.
The Real Migration Cost
| Organisation Size | Employees | Implementation Cost (est.) | Annual SuccessFactors Subscription | 3-Year Total Cost |
|---|---|---|---|---|
| Mid-market | 1,000–3,000 | £900K–£2.4M | £180K–£420K | £1.4M–£3.7M |
| Large enterprise | 3,000–10,000 | £2.5M–£7M | £420K–£1.2M | £3.8M–£10.6M |
| Very large (global) | 10,000–50,000 | £7M–£18M | £1.2M–£4.5M | £10.6M–£31.5M |
| Mega enterprise | 50,000+ | £18M–£45M+ | £4.5M–£12M+ | £31.5M–£81M+ |
These costs include implementation partner fees, internal resource costs, data migration, integration re-engineering, testing, and training — but frequently underestimate the ongoing cost of maintaining hybrid HCM architectures where SAP Payroll is retained on-premises. The 3-year total cost is typically 3–5× higher than SAP's licence sales projections at the point of contract signing.
Is SuccessFactors migration actually your best option?
Before committing to a multimillion-pound SuccessFactors programme, get an independent assessment of your SAP HCM support costs and alternatives. GoVendorFree can provide a like-for-like cost comparison within 24 hours.
Get Independent Assessment →The SAP SuccessFactors Alternatives Framework
Organisations facing SAP's SuccessFactors migration pressure have more options than SAP presents. The landscape of viable alternatives depends on the organisation's HCM maturity, customisation depth, and appetite for risk:
Option 1: Third-Party Support for SAP HCM On-Premises
Continue running your SAP HCM on-premises environment with independent third-party support. Saves 50–65% on annual SAP maintenance fees. Removes the SAP deadline pressure entirely. Recommended for organisations with highly customised, stable HCM environments where migration ROI is negative.
Option 2: Selective SuccessFactors Adoption
Adopt specific SuccessFactors modules (e.g., Recruiting, Learning, Performance) while retaining SAP HCM core and Payroll on-premises. Reduces migration risk and cost substantially. Requires SAP BTP middleware for integration. SAP actively discourages this but it is a valid tactical approach.
Option 3: Full HCM Platform Replacement
Replace SAP HCM with a best-of-breed alternative: Workday, Oracle HCM Cloud, or Ceridian Dayforce. For some organisations — particularly those with large-scale workforce management requirements — these platforms offer a better long-term outcome than SuccessFactors. Typically involves the same migration effort as SuccessFactors but without vendor lock-in.
Option 4: Negotiate Extended SAP Maintenance
SAP offers Extended Maintenance and RISE extended options that extend official support beyond 2027. These come at a premium (typically 2–4% additional fee) but may be the right short-term tactic while a longer-term migration strategy is evaluated. Use third-party support quotes to drive SAP commercial discussions.
Third-Party Support for SAP HCM: What It Covers
Third-party support for SAP HCM on-premises covers the full scope of support services that organisations actually consume from SAP — without the 22% annual fee and without the migration pressure:
- Break-fix support for all SAP HCM modules: Personnel Administration (PA), Organisational Management (OM), Time Management (TM), Payroll (PY), and ESS/MSS
- Country-specific statutory payroll compliance — tax tables, social insurance rates, legal reporting changes maintained by our specialist payroll support team
- Custom infotype support, user exit modifications, enhancement framework modifications
- Integration support — SAP HCM to SAP FI/CO, third-party payroll platforms, workforce management systems
- Security vulnerability remediation with patch documentation for GRC compliance
- Technical support: ABAP debugging, performance optimisation, basis administration guidance
- Support for SAP HCM 6.0 EhP4 through EhP8 — indefinitely, regardless of SAP's official end-of-maintenance timeline
Critical advantage: GoVendorFree's payroll compliance team maintains legal updates for all major payroll-relevant statutory changes across UK, EU, North America, and APAC jurisdictions. This is the capability most often cited as the reason organisations feel locked into SAP maintenance — and it's fully available through third-party support.
SAP S/4HANA Migration: The Definitive Cost Guide
52-page analysis of SAP migration costs, the SuccessFactors decision framework, negotiation strategies, and the third-party support economic model for SAP ECC and HCM environments.
Download Free Guide →SAP HCM TPS Cost Model
The financial case for third-party support as an alternative to SuccessFactors migration is compelling when viewed over a 3–5 year horizon:
| Organisation Size | SAP HCM Annual Maintenance (22%) | TPS Annual Cost (est.) | Annual TPS Saving | 3-Year TPS Saving vs Staying on SAP | 3-Year TPS Saving vs SuccessFactors |
|---|---|---|---|---|---|
| Mid-market (3,000 employees) | £95K | £34K–£42K | £53K–£61K | £159K–£183K | £1.2M–£3.5M |
| Large enterprise (10,000 employees) | £220K | £77K–£95K | £125K–£143K | £375K–£429K | £3.4M–£10.2M |
| Very large (25,000 employees) | £480K | £168K–£210K | £270K–£312K | £810K–£936K | £9.8M–£30.6M |
The right column is the headline figure: for a large enterprise, third-party support saves £3.4M–£10.2M over three years compared to a SuccessFactors migration — a saving that can fund meaningful digital transformation in other areas of the business rather than being consumed by an HCM system swap.
When SuccessFactors Actually Makes Sense
In the interest of balance: there are scenarios where a SuccessFactors migration genuinely makes sense, and GoVendorFree would tell you so:
- Simple, lightly customised SAP HCM environments (fewer than 50 custom objects, standard payroll configuration, single country) where SuccessFactors configuration can replicate functionality without major re-engineering
- Organisations with a genuine talent management strategy gap that requires the SuccessFactors Recruiting, Learning, and Performance suite — where those modules deliver ROI beyond cost avoidance
- High-growth M&A environments where frequent entity mergers and workforce consolidations benefit from SuccessFactors' multi-entity architecture
- New greenfield implementations where there is no existing SAP HCM estate to migrate
Outside these specific scenarios, the economics of SuccessFactors migration for established SAP HCM environments are difficult to justify — particularly when third-party support provides a credible long-term operational path at 50–65% less cost.
Conclusion
SAP's pressure to move SAP HCM customers to SuccessFactors is driven by SAP's commercial interest in cloud subscription revenues — not by any genuine business case analysis of your organisation's specific situation. The 2027 end-of-mainstream-maintenance deadline for SAP ECC (including HCM) is a vendor-created pressure point, not a technical reality. Your SAP HCM software will continue to function after 2027. Your question is what support model you use to maintain it.
Third-party support from GoVendorFree provides full SAP HCM support — including statutory payroll compliance updates — at 50–65% less than SAP maintenance. It removes the migration deadline pressure, gives your organisation time to evaluate alternatives properly, and frees up budget for initiatives that deliver genuine business value rather than cloud migration programmes that primarily benefit SAP's shareholders.